1. Department of Urology; St. Vincent's Hospital; The Catholic University of Korea; Suwon Korea
2. Department of Urology; Buddhist Tzu Chi University; Hualien Taiwan
3. Department of Urology; University of Occupational and Environmental Health; Kitakyushu Fukuoka Japan
4. Department of Urology; Hyogo College of Medicine; Nishinomiya Japan
5. Department of Urology; St. Mary's Hospital; The Catholic University of Korea; Seoul Korea